Amazon has added 96/24 streams to its music service for a more palatable up-charge than other high-res streaming services. But why isn't this being included with Amazon Prime, the way the company's UHD video offerings are?

Amazon has added 96/24 streams to its music service for a more palatable up-charge than other high-res streaming services. But why isn't this being included with Amazon Prime, the way the company's UHD video offerings are?